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The target of the new research effort is Antarctic krill, which are just a couple of inches long and one of the most abundant and important animals on the planet.

One theory is that climate change is altering the abundance of the tiny shrimplike krill humpback whales feed on, forcing them to travel further in search of food.

Filter feeders are everywhere in the animal world, from tiny crustaceans and certain types of coral and krill, to various molluscs, barnacles, and even massive basking sharks and baleen whales.

In the rich, freezing seas off the peninsula, penguins, seals and many whales feed on Antarctic krill.

But they have been consistently present off the coast — migrating from their wintering grounds in Mexico and Central America to California in the summer, where they gorge on fish and krill along the coast.